<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>网站维护</title>
</head>
<body >
    <center style="width: 400px;height: 200px;border: 1px solid grey;text-align: center;padding: 50px;margin: auto;">
        <h2>网站维护中....</h2>
        <p>请半个小时后访问...</p>
        <a href="/">回到首页</a>
    </center>
</body>
</html>